* remote-sim.c (simulator_command): Add comment about dealing with

	NULL or empty args.
start-sanitize-tic80
	* Makefile.in (tic80-tdep.o): Add target.
	* configure.tgt: Add tic80 case.
	* tic80-tdep.c: New file.
	* config/tic80/{tic80.mt, tm-tic80.h}: New files.
end-sanitize-tic80

7 files changed, 334 insertions, 1 deletions

diff --git a/gdb/.Sanitize b/gdb/.Sanitize
index 2a1e6a9..6700006 100644
--- a/gdb/.Sanitize
+++ b/gdb/.Sanitize
@@ -74,6 +74,20 @@ else
 	fi
 fi
 
+tic80_files="tic80-tdep.c"
+
+if ( echo $* | grep keep\-tic80 > /dev/null ) ; then
+	keep_these_too="${tic80_files} ${keep_these_too}"
+	if [ -n "${verbose}" ] ; then
+		echo Keeping ${tic80_files}
+	fi
+else
+	lose_these_too="${tic80_files} ${lose_these_too}"
+	if [ -n "${verbose}" ] ; then
+		echo Deleting ${tic80_files}
+	fi
+fi
+
 v850_files="v850ice.c v850-tdep.c"
 
 if ( echo $* | grep keep\-v850 > /dev/null ) ; then
@@ -615,6 +629,33 @@ else
 	done
 fi
 
+if ( echo $* | grep keep\-tic80 > /dev/null ) ; then
+	for i in * ; do
+		if test ! -d $i && (grep sanitize-tic80 $i > /dev/null) ; then
+			if [ -n "${verbose}" ] ; then
+				echo Keeping tic80 stuff in $i
+			fi
+		fi
+	done
+else
+	for i in * ; do
+		if test ! -d $i && (grep sanitize-tic80 $i > /dev/null) ; then
+			if [ -n "${verbose}" ] ; then
+				echo Removing traces of \"tic80\" from $i...
+			fi
+			cp $i new
+			sed '/start\-sanitize\-tic80/,/end-\sanitize\-tic80/d' < $i > new
+			if [ -n "${safe}" -a ! -f .Recover/$i ] ; then
+				if [ -n "${verbose}" ] ; then
+					echo Caching $i in .Recover...
+				fi
+				mv $i .Recover
+			fi
+			mv new $i
+		fi
+	done
+fi
+
 for i in * ; do
 	if test ! -d $i && (grep sanitize $i > /dev/null) ; then
 		echo '***' Some mentions of Sanitize are still left in $i! 1>&2
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7e750c0..83d482b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,14 @@
+Sat Mar 22 16:41:35 1997  Fred Fish  <fnf@cygnus.com>
+
+	* remote-sim.c (simulator_command): Add comment about dealing with
+	NULL or empty args.
+start-sanitize-tic80
+	* Makefile.in (tic80-tdep.o): Add target.
+	* configure.tgt: Add tic80 case.
+	* tic80-tdep.c: New file.
+	* config/tic80/{tic80.mt, tm-tic80.h}: New files.
+end-sanitize-tic80
+
 Sat Mar 22 02:48:11 1997  Peter Schauer  (pes@regent.e-technik.tu-muenchen.de)
 
 	* c-exp.y (yylex):  Handle nested template parameter lists.
diff --git a/gdb/config/tic80/tic80.mt b/gdb/config/tic80/tic80.mt
new file mode 100644
index 0000000..ca4ad46
--- /dev/null
+++ b/gdb/config/tic80/tic80.mt
@@ -0,0 +1,5 @@
+# Target: TI TMS320C80 (MVP) processor
+TDEPFILES= tic80-tdep.o
+TM_FILE= tm-tic80.h
+SIM_OBS = remote-sim.o
+SIM = ../sim/tic80/libsim.a -lm
diff --git a/gdb/config/tic80/tm-tic80.h b/gdb/config/tic80/tm-tic80.h
new file mode 100644
index 0000000..e2b10ad
--- /dev/null
+++ b/gdb/config/tic80/tm-tic80.h
@@ -0,0 +1,182 @@
+/* Parameters for execution on a TI TMS320C80 (MVP) processor.
+   Copyright 1997
+   Free Software Foundation, Inc. 
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef TM_TIC80_H
+#define TM_TIC80_H
+
+#ifdef __STDC__		/* Forward declare structs used in prototypes */
+struct frame_info;
+struct type;
+struct value;
+struct symbol;
+struct frame_saved_regs;
+#endif
+
+#define TARGET_BYTE_ORDER LITTLE_ENDIAN
+
+#define NUM_REGS 35
+
+#define REGISTER_NAMES \
+{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
+  "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
+  "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
+  "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
+  "pc", "a0", "a1" \
+}
+
+/* Various dedicated register numbers */
+
+#define SP_REGNUM 1		/* Contains address of top of stack */
+#define FP_REGNUM 31		/* Contains address of executing stack frame */
+#define PC_REGNUM 32		/* Contains program counter (FIXME?) */
+#define A0_REGNUM 33		/* Accumulator register 0 */
+#define A1_REGNUM 34		/* Accumulator register 1 */
+
+/* Total amount of space needed to store our copies of the machine's
+   register state, the array `registers'.  */
+
+#define REGISTER_BYTES (((NUM_REGS - 2) * 4) + (2 * 8))
+
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+
+#define REGISTER_BYTE(N) \
+   (((N) > A0_REGNUM) ? (((N) - A0_REGNUM) * 8 + A0_REGNUM * 4) : ((N) * 4))
+
+#define REGISTER_SIZE 4
+
+/* All regs are 4 bytes.  */
+
+#define REGISTER_RAW_SIZE(N) (4)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE 4
+
+/* All regs are 4 bytes.  */
+
+#define REGISTER_VIRTUAL_SIZE(N) (4)
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#define MAX_REGISTER_VIRTUAL_SIZE (4)
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+
+#define REGISTER_VIRTUAL_TYPE(N) /* FIXME? */ \
+	(((N) == A0_REGNUM || (N) == A1_REGNUM) ? builtin_type_float : builtin_type_int)
+
+/* Offset from address of function to start of its code.
+   Zero on most machines.  */
+
+#define FUNCTION_START_OFFSET 0
+
+/* Stack grows downward.  */
+
+#define INNER_THAN 		<
+
+/* Sequence of bytes for breakpoint instruction.
+   This is padded out to the size of a machine word. */
+
+#define BREAKPOINT 		{0x0, 0x0, 0x0, 0x0}	/* FIXME! */
+
+/* Amount PC must be decremented by after a breakpoint.
+   This is often the number of bytes in BREAKPOINT
+   but not always.  */
+
+#define DECR_PC_AFTER_BREAK	0			/* FIXME! */
+
+/* Push an empty stack frame, to record the current PC, etc.  */
+
+#define PUSH_DUMMY_FRAME 	tic80_push_dummy_frame()
+extern void tic80_push_dummy_frame PARAMS ((void));
+
+/* Discard from the stack the innermost frame, restoring all registers.  */
+
+#define POP_FRAME		tic80_pop_frame()
+extern void tic80_pop_frame PARAMS ((void));
+
+/* Return number of bytes at start of arglist that are not really args.  */
+
+#define FRAME_ARGS_SKIP 0
+
+/* Set VAL to the number of args passed to frame described by FI.
+   Can set VAL to -1, meaning no way to tell.  */
+/* We can't tell how many args there are */
+
+#define FRAME_NUM_ARGS(val,fi) (val = -1)
+
+#define FRAME_ARGS_SKIP 0
+#define FRAME_ARGS_ADDRESS(fi)   (fi)->frame
+#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
+
+/* Put here the code to store, into a struct frame_saved_regs,
+   the addresses of the saved registers of frame described by FRAME_INFO.
+   This includes special registers such as pc and fp saved in special
+   ways in the stack frame.  sp is even more special:
+   the address we return for it IS the sp for the next frame.  */
+
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)	    \
+   tic80_frame_find_saved_regs(frame_info, &(frame_saved_regs))
+extern void tic80_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
+
+/* Advance PC across any function entry prologue instructions
+   to reach some "real" code.  */
+
+#define SKIP_PROLOGUE(pc)	{ (pc) = tic80_skip_prologue (pc); }
+extern CORE_ADDR tic80_skip_prologue PARAMS ((CORE_ADDR pc));
+
+/* Immediately after a function call, return the saved pc.
+   Can't always go through the frames for this because on some machines
+   the new frame is not set up until the new function executes
+   some instructions.  */
+
+#define SAVED_PC_AFTER_CALL(frame)	tic80_saved_pc_after_call(frame)
+extern CORE_ADDR tic80_saved_pc_after_call PARAMS ((struct frame_info *));
+
+/* Describe the pointer in each stack frame to the previous stack frame
+   (its caller).  */
+
+/* FRAME_CHAIN takes a frame's nominal address
+   and produces the frame's chain-pointer. */
+
+#define FRAME_CHAIN(thisframe) (CORE_ADDR) tic80_frame_chain (thisframe)
+extern CORE_ADDR tic80_frame_chain PARAMS ((struct frame_info *));
+
+#define FRAME_SAVED_PC(FRAME)	tic80_frame_saved_pc (FRAME)
+extern CORE_ADDR tic80_frame_saved_pc PARAMS ((struct frame_info *));
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF.  */
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+  tic80_extract_return_value((TYPE), (REGBUF), (VALBUF))
+extern void tic80_extract_return_value PARAMS ((struct type *, char *, char *));
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  */
+
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  tic80_store_return_value((TYPE), (VALBUF))
+extern void tic80_store_return_value PARAMS ((struct type *, char *));
+
+#endif	/* TM_TIC80_H */
diff --git a/gdb/configure.tgt b/gdb/configure.tgt
index 7215eb5..cb6dc14 100644
--- a/gdb/configure.tgt
+++ b/gdb/configure.tgt
@@ -253,6 +253,10 @@ sparc64-*-*)		gdb_target=sp64 ;;
 
 tahoe-*-*)		gdb_target=tahoe ;;
 
+# start-sanitize-tic80
+tic80-*-*)		gdb_target=tic80 ;;
+# end-sanitize-tic80
+
 vax-*-*)		gdb_target=vax ;;
 
 # start-sanitize-v850
diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index 930e494..339b39c 100644
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -709,7 +709,8 @@ simulator_command (args, from_tty)
   /* Note that if the simulator hasn't been opened, gdbsim_desc == NULL
      which is correct (??? assuming of course one wishes to continue to
      allow commands to be sent to unopened simulators, which isn't entirely
-     unreasonable).  */
+     unreasonable).  Simulators should be prepared to deal with any
+     combination of NULL or empty args. */
   sim_do_command (gdbsim_desc, args);
 }
 
diff --git a/gdb/tic80-tdep.c b/gdb/tic80-tdep.c
new file mode 100644
index 0000000..d43f25e
--- /dev/null
+++ b/gdb/tic80-tdep.c
@@ -0,0 +1,89 @@
+/* Target-dependent code for the TI TMS320C80 (MVP) architecture,
+   for GDB, the GNU Debugger.
+   Copyright 1997 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "defs.h"
+
+CORE_ADDR
+tic80_skip_prologue (pc)
+     CORE_ADDR pc;
+{
+  error ("tic80_skip_prologue not implemented");
+}
+
+CORE_ADDR
+tic80_frame_chain (finfo)
+     struct frame_info *finfo;
+{
+  error ("tic80_frame_chain not implemented");
+}
+
+CORE_ADDR
+tic80_frame_saved_pc (finfo)
+     struct frame_info *finfo;
+{
+  error ("tic80_frame_saved_pc not implemented");
+}
+
+CORE_ADDR
+tic80_saved_pc_after_call (finfo)
+     struct frame_info *finfo;
+{
+  error ("tic80_saved_pc_after_call not implemented");
+}
+
+void
+tic80_pop_frame ()
+{
+  error ("tic80_pop_frame not implemented");
+}
+
+void
+tic80_store_return_value (valtype, valbuf)
+    struct type *valtype;
+    char *valbuf;
+{
+  error ("tic80_store_return_value not implemented");
+}
+
+/* Put here the code to store, into a struct frame_saved_regs, the
+   addresses of the saved registers of frame described by FRAME_INFO.
+   This includes special registers such as pc and fp saved in special
+   ways in the stack frame.  sp is even more special: the address we
+   return for it IS the sp for the next frame. */
+
+void
+tic80_frame_find_saved_regs (fi, fsr)
+     struct frame_info *fi;
+     struct frame_saved_regs *fsr;
+{
+  error ("tic80_frame_find_saved_regs not implemented");
+}
+
+/* Given a return value in `regbuf' with a type `valtype', 
+   extract and copy its value into `valbuf'.  */
+
+void
+tic80_extract_return_value (valtype, regbuf, valbuf)
+    struct type *valtype;
+    char regbuf[REGISTER_BYTES];
+    char *valbuf;
+{
+  error ("tic80_extract_return_value not implemented");
+}